Results 91 to 100 of about 1,218 (212)

Resonant and Ultra-short-period Planet Systems Are at Opposite Ends of the Exoplanet Age Distribution

The Astronomical Journal
Exoplanet systems are thought to evolve on secular timescales over billions of years. This evolution is impossible to directly observe on human timescales in most individual systems.
Stephen P. Schmidt, Kevin C. Schlaufman, Jacob H. Hamer   +2 more
doaj   +1 more source

Peas-in-a-pod across the Radius Valley: Rocky Systems Are Less Uniform in Mass but More Uniform in Size and Spacing

The Astrophysical Journal Letters
The ubiquity of “peas-in-a-pod” architectural patterns and the existence of the radius valley each presents a striking population-level trend for planets with R _p ≤ 4 R _⊕ that serves to place powerful constraints on the formation and evolution of these
Armaan V. Goyal, Songhu Wang
doaj   +1 more source

Differentiation of silicates and iron during formation of Mercury and high-density exoplanets [PDF]

, 2014
Sergei Nayakshin
openalex   +1 more source

Interior heating drives the formation of clouds on exoplanet gas giants [PDF]

, 2021
Orkun Temel, Hakan Sert, Cem Berk Senel, Tim Van Hoolst, Özgür Karatekin   +4 more
openalex   +1 more source

The Radius Cliff is a Waterfall: Explaining Sub-Neptune Exoplanets with Steam Worlds

The Astrophysical Journal
The demographics of Kepler planets provide a key testbed for models of planet formation and evolution, particularly for explaining the radius valley separating super-Earths and sub-Neptunes.
Aritra Chakrabarty, Gijs D. Mulders, Artyom Aguichine, Natalie Batalha   +3 more
doaj   +1 more source

Architectures of Exoplanetary Systems. IV. A Multiplanet Model for Reproducing the Radius Valley and Intrasystem Size Similarity of Planets around Kepler’s FGK Dwarfs

The Astrophysical Journal
The Kepler-observed distribution of planet sizes has revealed two distinct patterns: (1) a radius valley separating super-Earths and sub-Neptunes and (2) a preference for intrasystem size similarity.
Matthias Y. He, Eric B. Ford
doaj   +1 more source

Characterization of exoplanets from their formation III: The statistics of planetary luminosities [PDF]

, 2017
C. Mordasini, Gabriel-Dominique Marleau, P. Mollière   +2 more
openalex   +1 more source

Analytical model for starshade formation flying with applications to exoplanet direct imaging observation scheduling [PDF]

, 2021
Gabriel Soto, Dmitry Savransky, Rhonda Morgan   +2 more
openalex   +1 more source

Exoplanet formation inference using conditional invertible neural networks

CoRR
The interpretation of the origin of observed exoplanets is usually done only qualitatively due to uncertainties of key parameters in planet formation models. To allow a quantitative methodology which traces back in time to the planet birth locations, we train recently developed conditional invertible neural networks (cINN) on synthetic data from a ...
Remo Burn, Victor Ksoll, Hubert Klahr, Thomas Henning   +3 more
openaire   +2 more sources

Molecular hydrogen in oxidized atmospheres of terrestrial exoplanets : Implications for water and oxygen formation

, 2021
Thomas Drant, Nathalie Carrasco, Zoé Perrin, Ludovic Vettier, Thomas Gautier, Shang‐Min Tsai, Kevin Heng   +6 more
openalex   +1 more source